Sera ndiye wachinayi wofunikira kwambiri michere pakupanga tirik pambuyo pa nayitrogeni, phosphorous ndi potaziyamu. M'mbuyomu, mbewuyo inali ndi ufulu wopereka sulfure m'minda kudzera mumvula yodetsedwa, koma monga momwe magawo a chimbudzi amathandizira kuchuluka kwa sulfur atagwera ndi mvula yambiri, kutsika kwambiri. Ndipo Agarral ayenera kusintha feteleza ndi imvi, chifukwa apo ngati zokolola za chikhalidwe zimatha kuchepa, zimauza Bil Spiegel mu nkhani ya porl www.ugrictive.
Kuperewera kwa sulufur mu mbewu za tirigu kumawoneka motere.
"Monga lamulo, tirigu wokhala ndi vuto la sulufur ndi chikasu ndikutsitsidwa ndipo limawonedwa m'munda wa m'munda, pomwe nthaka inakon yakhalapo, pomwepo panali akatswiri a nthaka ku Yunivesite ya Kansas. - Mutha kuwona madera omwe ali ndi vuto la sulfure pamapiri kapena malo otsetsereka pomwe zomwe zidakokoloweke zidachitika komanso zomwe zidawonongeka. Kapena tirigu m'malo omwe dothi lachotsedwa kapena kudula limapangidwa - mwachitsanzo, malinga, minda yosagwirizana - tirigu wofesedwa papambanso kukhala zizindikiro. "
"Chidziwitso: Kuperewera kwa sp mu mbewu zomwe zimakula nthawi zambiri kumakhala kolakwika chifukwa chosowa nayitrogeni (n). Komabe, mosiyana ndi kuchepa kwa nayitrogeni, pomwe masamba akale amakhala "oyatsidwa" ndi achikasu, okhala ndi kusowa kwa sulufure, zowoneka bwino zachikasu nthawi zambiri zimawonekera pa masamba apamwamba. Rigat ndi kuchepa kwa chlorobic, "akufotokoza riziz.
Kuchepa kwa sulufure mu tirigu kumawonekera kumayambiriro kwa masika, organic s amalowa mkati mwa nthaka, ndipo mizu yake isanathe kumera mwakufuna kwa malipiro omwe alipo.
"Kuperewera kwa sulufu nthawi zambiri kumakhala kovuta kuzindikira, chifukwa chlorosis sizawonekeratu nthawi zonse," Ruiz Daiz akuchenjeza. - Zikhalidwe zokhala ndi kuchepa kwa sulfure kumatha kukhala kotsika, kuwonda kwambiri komanso kuwoneka. Pankhani ya tirigu ndi mbewu zina, kusachedwa. Mpikisano yozizira pachaka ya namsongole imalimbikitsidwanso chifukwa chokulira pang'onopang'ono komanso kusowa kwabwino. "
Ngati m'mbiri ya m'munda pali kale kuchepera kwa sulfure, alimi angaganizire kugwiritsa ntchito s monga njira yodzitetezera nthawi yozizira.
Zogulitsa zomwe zili ndi imvi zitha kugwiritsidwa ntchito
Pali feteleza ambiri omwe ali oyenera kupanga nyengo ndikuchotsa kuperewera kwa sulufure:
Amonium sulfate ndi zinthu zowuma zomwe zimayambitsa nayisiti ya nayitrogeni ndi S. Ili ndi mphamvu yayitali yopanga, ndipo pH iyenera kuyang'aniridwa. Amonium sulfate amatanthauza zosankha zabwino za kukonzanso kapena kudyetsa kukonza zoperewera zomwe zidalipo kale.
Gypsum ndi calcium sulfate ndipo nthawi zambiri imapezeka pamtundu wamagetsi wokhala ndi 18.6% s, ndi granules, zomwe zimakupatsani mwayi wosakaniza ndi zinthu zina. Popeza iyi ndi gwero la sulfate, lidzapezeka pomwepo ndikuyenera kudyetsa masika. Komabe, gypsum sikuti amasungunuka m'madzi ngati feteleza ambiri, kuphatikizapo ammonium sulfate.
Zogulitsa zatsopano za NPS, monga monga microess ndi ena, zida zochokera ku ammonium phosphate, zomwe zimaphatikizapo s, ndipo nthawi zina zimakhala zitsulo. Mwambiri mwazinthu izi, zimakhala za mawonekedwe a element s ndi sulfate.
Amonium Thiosulpate ndichinthu chopangidwa kwambiri chogwiritsidwa ntchito popanga feteleza wamadzi, chifukwa chogwirizana ndi mayankho a nayitrogeni ndi zina zomaliza zamadzimadzi. Yoyenera kudya masika.
Potaziyamu Thiosulpate ndi mankhwala owonekera madzi, imatha kusakanikirana ndi feteleza wina madzi. Monga Thiosulpate, yoyenera kudyetsa koyambirira kwa masika.
Monga chachinayi chofunikira kwambiri cha michere, Sulfure imakhala ndi gawo lofunikira pakupanga amino acids, mapuloteni ndi mafuta ndipo ndikofunikira kuti apangidwe a chlorophyll.
Nitrogen ndi sulufule zimagwirizanitsidwa ndi pamlingo wina, chifukwa sulufu imachita gawo poyambitsa Nitrantdudad enzyme, yomwe imathandizira kumasula m'mangiri acid. Zotsatira zake, luso la kugwiritsa ntchito nayitrogeni kumachepetsa ndi kusowa kwa sulufule, akuti Ruis Diaz.
(Source: www.ugriclilt.gt. Wolemba: Bill Spiegel).